Belt buckle



FIG. 1 is a front elevational view of a belt buckle showing my new design;

FIG. 2 is a left end elevational view thereof;

FIG. 3 is a rear elevational view;

FIG. 4 is a right end elevational view thereof;

FIG. 5 is a bottom plan view thereof. 

The ornamental design for belt buckle, substantially as shown. 